W. Butler
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Illinois op | ??/??/1965 | 0 |  United States |
| Illinois op | ??/??/1964 | 0 | United States |
W. Butler Repertoire with White pieces (most played)
| ECO | Opening | Games |
| D16 | Queen's Gambit Declined Slav accepted, Alapin variation | 1 games |
W. Butler Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| A42 | Modern defence, Averbakh system | 1 games |
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